3168781d2f
This is a simple application limited region detector that is quite conservative at the moment. We detect as being application-limited if we see sending rate as less than 30% of the estimated bandwidth over 500 ms. The moment we detect a single burst above 30% over a 100 ms period, we consider ourselves network limited. This class is currently not used. A follow up CL will leverage this to enable probing. BUG=webrtc:6332 Review-Url: https://codereview.webrtc.org/2340763004 Cr-Commit-Position: refs/heads/master@{#14505}
49 lines
1.5 KiB
C++
49 lines
1.5 KiB
C++
/*
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* Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include "webrtc/test/gtest.h"
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#include "webrtc/modules/pacing/alr_detector.h"
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namespace {
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constexpr int kMeasuredIntervalMs = 110;
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constexpr int kEstimatedBitrateBps = 300000;
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constexpr int kBytesInIntervalAtEstimatedBitrate =
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(kEstimatedBitrateBps / 8) * kMeasuredIntervalMs / 1000;
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} // namespace
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namespace webrtc {
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TEST(AlrDetectorTest, ApplicationLimitedWhenLittleDataSent) {
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AlrDetector alr_detector;
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alr_detector.SetEstimatedBitrate(kEstimatedBitrateBps);
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for (int i = 0; i < 6; i++)
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alr_detector.OnBytesSent(0, kMeasuredIntervalMs);
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EXPECT_EQ(alr_detector.InApplicationLimitedRegion(), true);
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for (int i = 0; i < 6; i++)
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alr_detector.OnBytesSent(100, kMeasuredIntervalMs);
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EXPECT_EQ(alr_detector.InApplicationLimitedRegion(), true);
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}
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TEST(AlrDetectorTest, NetworkLimitedWhenSendingCloseToEstimate) {
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AlrDetector alr_detector;
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alr_detector.SetEstimatedBitrate(kEstimatedBitrateBps);
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for (int i = 0; i < 6; i++)
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alr_detector.OnBytesSent(kBytesInIntervalAtEstimatedBitrate,
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kMeasuredIntervalMs);
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EXPECT_EQ(alr_detector.InApplicationLimitedRegion(), false);
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}
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} // namespace webrtc
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